VHP-3

VHP-3, VHP-4, VPR247 Vishay Foil Resistors Bulk Metal® Foil Technology Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/°C and Power up to 10 Watts FEATURES • Temperature coefficient of resistance TCR: ± 2 ppm/°C typical (- 55 °C to + 125 °C, + 25 °C ref.) (see tables 1 and 2) • Tolerance: to ± 0.01 % (see tables 1 and 2) • Power rating (heat-sinked): 10 W Pb-free Available RoHS* COMPLIANT • Load life stability: ± 0.01 % at 25 °C, 2000 h at rated power • Resistance range: 0.05 Ω to 80 kΩ Any value available within resistance range Vishay Bulk Metal® Foil power resistors offer the best approach to low value power and current sensing when a combination of accuracy, tight TCR, low thermal EMF, low voltage coefficient, Kelvin connection, and long term stability (under power) are required. Vishay Models VHP-3 and VHP-4 offer all welded construction and screw mounting directly to a metal heat sink for maximum heat transfer. Hermetic sealing and nitrogen back fill provide the maximum protection against environmental stresses, thereby ensuring long term stability. A special feature of this construction is Kovar eyelet’s and OFHC solder plated copper leads providing the lowest thermal EMFs in the industry. Vishay Model VPR247 has many of the advantages of the VHP-4 but with significantly reduced size and weight. It also has gold plated copper leads. Our Application Engineering department is available to advise and to make recommendations. For non-standard technical requirements and special applications, please contact us. • Electrostatic discharge (ESD) above 25 000 V • Non inductive, non capacitive design • Rise time: 1.0 ns without ringing • Current noise: < - 40 dB • Thermal EMF: 0.05 µV/°C typical • Voltage coefficient: < 0.1 ppm/V • Non inductive: 0.08 µH • Non hot spot design • Terminal finishes available: VHP-3 and VHP-4: VPR247: lead (Pb)-free tin/lead alloy gold plated • Any value available within resistance range (e.g. 1K234) • Prototype samples available from 48 h. For more information, please contact foil@vishay.com • For better performances, please contact Application Engineering TABLE 1 - VHP-31) SPECIFICATIONS RESISTANCE RANGE (Ω) 50 to 80K 25 to < 50 10 to < 25 5 to < 10 2 to < 5 1 to < 2 0.5 to < 1 0.25 to < 0.5 0.1 to < 0.25 TIGHTEST TOLERANCE ± 0.01 % ± 0.02 % ± 0.05 % ± 0.1 % ± 0.25 % ± 0.5 % ± 1.0 % ± 2.0 % ± 5.0 % ± 50 ppm/°C ± 2 ppm/°C TYPICAL TCR3), 4) MAXIMUM TCR3) ± 5 ppm/°C ± 7 ppm/°C ± 10 ppm/°C ± 13 ppm/°C ± 20 ppm/°C ± 25 ppm/°C TABLE 2 - VHP-4 AND VPR247 SPECIFICATIONS1), 2) RESISTANCE RANGE (Ω) 10 to 500 5 to < 10 2 to < 5 1 to < 2 0.5 to < 1 0.25 to < 0.5 0.1 to < 0.25 0.05 to < 0.1 TIGHTEST TOLERANCE ± 0.01 % ± 0.02 % ± 0.05 % ± 0.1 % ± 0.25 % ± 0.5 % ± 1.0 % ± 2.0 % ± 2 ppm/°C TYPICAL TCR3), 4) MAXIMUM TCR3) ± 5 ppm/°C ± 6 ppm/°C ± 8 ppm/°C ± 10 ppm/°C ± 15 ppm/°C ± 20 ppm/°C ± 25 ppm/°C ± 30 ppm/°C Notes 1. Weight of VHP-3 and VHP-4 = 15 g maximum VPR247 = 7 g maximum 2. Available up to 500 Ω 3. - 55 °C to + 125 °C, + 25 °C ref. 4. See figure 5 * Pb containing terminations are not RoHS compliant, exemptions may apply Document Number: 63005 Revision: 31-Oct-07 For any questions, contact: foil@vishay.com www.vishay.com 1 VHP-3, VHP-4, VPR247 Vishay Foil Resistors Bulk Metal® Foil Technology Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/°C and Power up to 10 Watts TABLE 3 - GENERAL SPECIFICATIONS Stability Load life 2000 h Shelf life Power Rating At + 25 °C (see Fig. 1) Current Noise High Frequency Operation Rise time Inductance (L)3) Capacitance (C) Voltage Coefficient Operating Temperature Range Hermeticity Maximum Working Thermal EMF8) Voltage7) 1.0 ns at 1 kΩ without ringing 0.1 µH maximum; 0.08 µH typical 1.0 pF maximum; 0.5 pF typical < 0.1 ppm/V - 55 °C to + 150 °C 10-7 Atmospheric cc/s maximum 600 V 0.1 µV/°C maximum (lead effect) 2.5 µV/W maximum (power effect) 10 W or 3 A - heat sink2) 3 W or 3 A - free air < 0.010 µV (RMS)/V of applied voltage (- 40 dB) ± 0.05 % maximum ΔR, 3 W in still air at + 25 °C ± 0.05 % maximum ΔR under full rated power (10 W at + 25 °C on heat sink) ± 0.0005 % (5 ppm) maximum ΔR/year FIGURE 1 - POWER DERATING CURVE Percent of Rated Power + 100 + 75 + 50 + 25 0 - 75 - 50 - 25 - 55 °C Rated Power FIGURE 2 - KELVIN CONNECTION I1 r1 R r2 I2 r3 Im r4 0 0 + 25 + 50 + 75 + 100 + 125 + 150 + 175 r5 Ambient Temperature (°C) ∞ Kelvin (4-terminal) connections are used for these low ohmic value products to measure a precise voltage drop across the resistive element. In these applications the contact resistance, lead resistance, and their TCR effect may be greater than that of the element itself and could cause significant errors if the standard 2-terminal connection is used. Figure 2 shows a high impedance measurement system where r5 approaches infinity and Im approaches zero resulting in negligible IR drop through r3 and r4 which negates their lead resistance and TCR effect. With the voltage sense leads E1 and E2 inside of r1 and r2 the resistance and TCR effect of the current leads, I1 and I2 are negated and only the resistance and TCR of the element R are sensed. This method of measurement is essential for precise current sensing. FIGURE 3 - VHP-3, VHP-4 STANDARD IMPRINTING AND DIMENSIONS in inches (millimeters) VHP-3 Mounting Hole VHP-4 (4 terminal) Mounting Hole 0.665 (16.89) ± 0.005 (± 0.13) 1.186 (30.13) ± 0.005 (± 0.13) 1.530 (38.86) ± 0.005 (± 0.13) 0.665 (16.89) ± 0.005 (± 0.13) 1.186 (30.13) ± 0.005 (± 0.13) 1.530 (38.86) ± 0.005 (± 0.13) I1 I2 TO-3 Cap TO-3 Base 0.040 (1.00) Dia. ± 0.005 (± 0.13) 0.43 (10.92) ± 0.01 (± 0.25) 1.00 (25.4) ± 0.005 (± 0.13) 0.770 (19.56) Max. Dia. 0.266 (6.76) ± 0.005 (± 0.13) 0.335 (8.51) ± 0.005 (± 0.13) Standard Marking Arrangement Print Spec Model Number VISHAY VHP-3T 12K500 0.1 % B0729 0.45 (11.43) Min. Resistance Value Tolerance Date Code B 07 29 Year Week 0.156 dia (3.9) ± 0.005 (± 0.13) 0.222 (5.64) E1 E2 I1 E1 E2 I2 0.156 Dia. (3.9) ± 0.005 (± 0.13) Case not active; insulators not required; mounting hardware not supplied. www.vishay.com 2 For any questions, contact: foil@vishay.com Document Number: 63005 Revision: 31-Oct-07 VHP-3, VHP-4, VPR247 Bulk Metal® Foil Technology Vishay Foil Resistors Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/°C and Power up to 10 Watts FIGURE 4 - VPR247 STANDARD IMPRINTING AND DIMENSIONS B L C VISHAY VPR247 XXXX 0R2000 1 % 0.140 ± 0.005 (Dia. Thru Hole) W H 0.010 Max. Sleeve Extension Date Code 07 10 Year Week Tolerance Resistance Value LL I1 E1 E2 I2 S LS Gold Plated Copper Leads 0.025 Dia. A DIMENSION L H W LL LS S A B C INCHES 0.690 ± 0.005 0.820 ± 0.005 0.215 ± 0.005 0.500 minimum 0.100 ± 0.005 0.200 ± 0.005 0.120 ± 0.005 0.040 ± 0.005 0.120 ± 0.005 MM 17.53 ± 0.13 20.83 ± 0.13 5.46 ± 0.13 12.70 minimum 2.54 ± 0.13 5.08 ± 0.13 3.05 ± 0.13 1.02 ± 0.13 3.05 ± 0.13 FIGURE 5 - TYPICAL TCR CURVE + 150 + 100 FIGURE 6 - TRIMMING TO VALUES ΔR + 50 0 - 50 R (ppm) Interloop Capacitance Reduction in Series Current Path Before Trimming Current Path After Trimming Trimming Process Removes this Material from Shorting Strip Area Changing Current Path and Increasing Resistance - 100 - 150 - 200 - 50 - 55 - 25 0 + 20 + 50 + 75 + 100 + 125 ± 2 ppm/°C (+ 25 °C Reference) Mutual Inductance Reduction due to Change in Current Direction Ambient Temperature (°C) Note: Foil shown in black, etched spaces in white (For more details, see tables 1 and 2) Document Number: 63005 Revision: 31-Oct-07 For any questions, contact: foil@vishay.com www.vishay.com 3 VHP-3, VHP-4, VPR247 Vishay Foil Resistors Bulk Metal® Foil Technology Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/°C and Power up to 10 Watts METHOD PARAGRAPH6) Test Group I Conditioning Test Group II Resistance temperature Characteristic (- 55 °C to + 125 °C) 4.8.4 104 MΩ ± 0.01 % 4.8.16 ± 0.3 % + 0.01 Ω ± 0.005 % See tables 1 and 2, page 1 4.8.2 ± 0.2 % + 0.01 Ω ± 0.03 % MIL-PRF-39009 ΔR LIMITS VHP-3, VHP-4 AND VPR247 TYPICAL ΔR TEST DATA9) TABLE 4 - ENVIRONMENTAL PERFORMANCE INCHES L W H T 6.00 4.00 2.00 0.04 3. Inductance (L) due mainly to the leads. www.vishay.com 4 For any questions, contact: foil@vishay.com Document Number: 63005 Revision: 31-Oct-07 VHP-3, VHP-4, VPR247 Bulk Metal® Foil Technology Vishay Foil Resistors Hermetically Sealed Power and Current Sensing Resistor with TCR of 2 ppm/°C and Power up to 10 Watts TABLE 5 - GLOBAL PART NUMBER INFORMATION NEW GLOBAL PART NUMBER: Y0065500R000T9L (preferred part number format) DENOTES PRECISION Y VALUE R=Ω K = kΩ AER* 0 = standard 9 = lead (Pb)-free 1 - 999 = custom Y 0 0 6 5 5 0 0 R 0 0 0 T 9 L PRODUCT CODE 0065 = VHP-3 0066 = VHP-4 0830 = VPR247 RESISTANCE TOLERANCE T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % G = ± 2.0 % J = ± 5.0 % PACKAGING L = bulk pack FOR EXAMPLE: ABOVE GLOBAL ORDER Y0065 500R000 T 9 L: TYPE: VHP-3 VALUE: 500.0 Ω ABSOLUTE TOLERANCE: ± 0.01 % TERMINATION: lead (Pb)-free PACKAGING: bulk pack HISTORICAL PART NUMBER: VHP-3T 500R00 T B (will continue to be used) VHP-3 MODEL VHP-3 VHP-4 VPR247 T TERMINATION T = lead (Pb)-free None = tin/lead alloy 500R00 OHMIC VALUE 500 Ω T RESISTANCE TOLERANCE T = ± 0.01 % Q = ± 0.02 % A = ± 0.05 % B = ± 0.1 % C = ± 0.25 % D = ± 0.5 % F = ± 1.0 % G = ± 2.0 % J = ± 5.0 % B PACKAGING B = bulk pack Note * For non-standard requests, please contact Application Engineering. Document Number: 63005 Revision: 31-Oct-07 For any questions, contact: foil@vishay.com www.vishay.com 5 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1